1482 search results - page 172 / 297 » An Algebra for XML Query |
148
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EDBT
2012
ACM
13 years 6 months ago
2012
ACM
We present an effective optimization framework for general SQLlike map-reduce queries, which is based on a novel query algebra and uses a small number of higher-order physical ope...
122
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DEXA
1994
Springer
15 years 8 months ago
1994
Springer
We describe a functional database language OR-SML for handling disjunctive information in database queries, and its implementation on top of Standard ML 12]. The core language has ...
132
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CORR
2012
Springer
13 years 11 months ago
2012
Springer
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic s...
227
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ICDT
2009
ACM
16 years 4 months ago
2009
ACM
The ability to flexibly compose confidence computation with the operations of relational algebra is an important feature of probabilistic database query languages. Computing confi...
110
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ECHT
1992
15 years 8 months ago
1992
We present a model for data organized as graphs. Regular expressions over the types of the node and edge labels are used to qualify connected subgraphs. An algebraic language base...